Very nice. Most of the cameras are hidden, but I'm not sure you really want that? Maybe you'd prefer to scare people off rather than know who it was after the fact? I'm sure you've thought about that, though.

For the wire across the walkway, consider something like this: https://www.amazon.com/UT-Wire-UTW-CPL5-GY-Blanket-Protector/dp/B00183DVW2 There are all different kinds, from simple to industrial.